Hierarchical subject thesaurus6. Politics, law and economics
6.05 Legal systems
6.10 Human rights
6.15 Politics and government
6.20 International relations
6.25 Economics
6.30 Economic and social development
6.35 Agriculture
6.40 Industry
6.45 Civil, military and mining engineering
6.50 Manufacturing and transport engineering
6.55 Materials and products
6.60 Equipment and facilities
6.65 Services
6.70 Finance and trade
6.75 Organization and management
6.80 Personnel management
6.85 Labour